Cooler design



FIG. 1 is front, left perspective view of a cooler design showing my new design;

FIG. 2 is a front, right perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof; and,

FIG. 5 is a left side elevation view thereof.

The broken line in the figure drawings represents unclaimed environment only and forms no part of the claimed design. 

CLAIM The ornamental design for a cooler design, as shown and described. 